A:AnswerI actually have an iPhone to that works just fine on my projector it sounds like the projector is it realizing that you have anything plugged into it for some reason could be the cord To your iPhone mine didn’t work at first either and I had to go to AT&T store and found out it was my phone they had to reboot you may want to try that at the store
A:AnswerI have never used it as a stand alone unit...I use it with my iPad or my Phone. I have a HDMI to lightening adapter. It is easy to set up, the speaker is very good for such a small unit. And it can run off battery or plug in. Very convenient.